4-Bromo-2-[[[(1,1-dimethylethyl)dimethylsilyl]oxy]methyl]-1-nitrobenzene CAS 1621961-83-8
| CAS No. | 1621961-83-8 |
| Molecular Formula | C13H20BrNO3Si |
| Molecular Weight | 346.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution, 4-Bromo-2-[[[(1,1-dimethylethyl)dimethylsilyl]oxy]methyl]-1-nitrobenzene is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 346.29 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
4-Bromo-2-[[[(1,1-dimethylethyl)dimethylsilyl]oxy]methyl]-1-nitrobenzene (CAS 1621961-83-8), molecular formula C13H20BrNO3Si and molecular weight 346.29 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C13H20BrNO3Si |
| Molecular Weight | 346.29 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Bromo Standards
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Recommended Standards
- 4,4-Bis(diethoxyphosphoryl)butan-1-ol (CAS 150250-34-3)
- (2S)-2-[2-(2,6-dioxo-3-piperidyl)-1,3-dioxo-isoindolin-4-yl]oxypropanoic acid (CAS 2764746-06-5)
- (R)-1-((2S,3R,4R)-3,4-diacetoxy-5-oxotetrahydrofuran-2-yl)ethane-1,2-diyl diacetate (CAS 136345-68-1)
- (2Z)-3-[1-(3-amino-3-oxopropyl)-3-(3,4-difluorophenyl)-1H-pyrazol-4-yl]-2-cyanoacrylic acid (CAS 926241-08-9)
- Brivudine Impurity 16 (CAS 113890-38-3)
- Methyl 5-(benzylamino)-3-oxopentanoate hydrochloride (CAS 1257403-90-9)
- Iron perchlorate hydrate (CAS 15201-61-3)
- 1-(3,5-Dichlorophenyl)-3-(o-tolyl)propan-1-one (CAS 898790-05-1)
- 5-(tert-Butyl)-4,6-dichloropyrimidin-2-amine (CAS 1395344-17-8)
- 4-(4-Chlorophenyl)-1,2,3,6-tetrahydropyridine (CAS 30005-58-4)
- Ethyl 2-amino-2-(2-bromophenyl)propanoate hydrochloride (CAS 1956386-27-8)
- (5-((4-Fluorophenyl)sulfonyl)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl)methyl cyclopropanecarboxylate (CAS 956193-71-8)
- 5-(5,6-Dichloro-1H-1,3-benzodiazol-2-yl)-1,2-dihydropyridin-2-one (CAS 338774-06-4)
- Semaglutide Impurity 176 (CAS CATO-C4X-2226176)
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